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Commercially Pure Silver vs. ASTM B477 Au-Ni-Ag

Both commercially pure silver and ASTM B477 Au-Ni-Ag are otherwise unclassified metals. They have a modest 22% of their average alloy composition in common, which, by itself, doesn't mean much. There are 19 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is commercially pure silver and the bottom bar is ASTM B477 Au-Ni-Ag.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
95
Elongation at Break, % 1.1 to 29
5.5 to 11
Poisson's Ratio 0.37
0.41
Shear Modulus, GPa 26
34
Shear Strength, MPa 120 to 190
190 to 320
Tensile Strength: Ultimate (UTS), MPa 190 to 340
310 to 550

Thermal Properties

Latent Heat of Fusion, J/g 110
80
Melting Completion (Liquidus), °C 960
1010
Melting Onset (Solidus), °C 960
930
Specific Heat Capacity, J/kg-K 240
160
Thermal Expansion, µm/m-K 20
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 100
14
Electrical Conductivity: Equal Weight (Specific), % IACS 87
7.5

Otherwise Unclassified Properties

Density, g/cm3 10
17

Common Calculations

Stiffness to Weight: Axial, points 3.8
3.1
Stiffness to Weight: Bending, points 13
8.9
Strength to Weight: Axial, points 4.9 to 8.9
5.0 to 9.0
Strength to Weight: Bending, points 6.9 to 10
6.0 to 8.8
Thermal Shock Resistance, points 9.5 to 17
16 to 28

Alloy Composition

Gold (Au), % 0
74.2 to 75.8
Nickel (Ni), % 0
2.6 to 3.4
Silver (Ag), % 99.9 to 100
21.4 to 22.6
Residuals, % 0
0 to 0.3